J-cup roller
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Roller J-Cups – Pair

Our exclusive Roller J-Cups allow for easy bar placement adjusting.

Fits 2.3″ x 2.3″ uprights with 5/8″ holes only.

$69.99

In Stock

-

EXCELLENT
WARRANTY

Easily adjust the position of your bar with these
one-of-a-kind Roller J-Cups.

The unique and extraordinarily useful design of these exclusive Roller J-Cups allows you to quickly and easily adjust the position of your barbell.

Specs Per J-Cup

Weight1.1kg/2.5lbs
Width287mm/11.3″
Length287mm/11.3″
Height287mm/11.3″
Outer CoatingBlack Powder Coat
Roller MaterialHard Nylon
Max Capacity136kg/300lbs
Shipping Box Dimensions7" x 7" x 7"
WarrantyLimited Lifetime Warranty

IMPORTANT: The J-Cups ONLY fit upright tubing dimensions of 2.3” x 2.3” (60mm x 60mm) with 5/8” holes — our standard Bells of Steel upright size.

Frequently Asked Questions

Customer Reviews
4.8 Based on 12 Reviews
5 ★
83% 
10
4 ★
8% 
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3 ★
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Customer Photos
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MS
12/01/2021
Michael S.
United States United States

Need Roller J hooks for Titan X2 rack

Needed or more so wanted, roller j hooks for my titan X2 rack. These are close in size that I took a gamble and bought them. Not disappointed at all. These seem really durable. The rollers are very smooth. They make centering the bar so much easier now. I mostly use a 32 mm rogue squat bar and anything over 225 the bar would not shift to either side very easily. They save time and most importantly energy when re-centering the bar. At 300+, I would have to pick the bar up and shift it over on the stock j hooks, NOT ANYMORE. These make life so much simpler. Roller j hooks should just come stock with all racks from everyone. SO to get these to fit the X2 rack, I used a 2 part epoxy and glued - 1/8" thick UHMW plastic on the insides of the j hooks. Its not the prettiest looking but I was short on time and I don't care about how they look on the inside...I have attached photos for a reference. On a side note, B.O.S. contacted me before they shipped this out as to as ask if these will fit my rack cause there was no record of me owning a B.O.S. rack. thought it was strange but ok. Delayed shipping by about 2 days just to confirm these would fit. I knew the pin would fit an just had to do some math on the plastic inserts.

  • My Fitness Goal Is: Keep from feeling old
Bells of Steel Roller J-Cups - Pair ReviewBells of Steel Roller J-Cups - Pair ReviewBells of Steel Roller J-Cups - Pair ReviewBells of Steel Roller J-Cups - Pair ReviewBells of Steel Roller J-Cups - Pair Review
12/03/2021

Bells of Steel

We're excited you love your Roller J Cups! We're even more excited you were able to "adjust" them to make them fit for you. We like to confirm with customers that don't have our racks to make sure the attachment they purchased fits their rack prior to shipping. Thanks for the review, now back to the gainz! Erica and the B.o.S Crew!

EN
07/15/2021
Eric N.
CA CA

Amazing

Can't get this anywhere else let alone for the price. Great quality, use it on my lever arms to simulate a assisted lifted off without a partner in benching. Only suggestion is to add uhmw plastic. Great company to buy from

  • My Fitness Goal Is: Avoiding dad bod with no kids
Bells of Steel Roller J-Cups - Pair Review
SC
05/04/2021
Steve C.
Canada Canada

Really nice for bench

I think it's unreal that these come standard with the light commercial rack. They're so useful for adjusting the bar position before a big bench. My only complaint is that I don't understand why they don't have UHMW coating like the regular J-cups. It's an easy DIY fix though, so they're still well worth picking up if you don't have any. I bought a cheap sheet of 1/8" UHMW off amazon, cut a few strips and used 2 sided gorilla tape to cover all the metal spots and protect the knurling on my beautiful Bells of Steel cerakote power bar 🙂

  • Product Condition: Perfect
  • Bells of Steel Products Owned: Just about everything!
  • My Fitness Goal Is: Strength, size, general fitness health
Bells of Steel Roller J-Cups - Pair Review
JR
03/31/2021
Jason R.
US US

Makes bench setup easy

Love using these for bench. I never quite get my bench centered perfect under the rack. and this lets me adjust with ease when fully loaded.

  • Product Condition: Perfect
  • Bells of Steel Products Owned: Squat Stand
  • My Fitness Goal Is: He-Man
BM
12/02/2020
brian m.
CA CA

Let the Good Times Roll!

These roller J-cups make so much sense. Bench press, incline press, squats all require a centered bar. It's so easy with these j-cups that I believe they should be standard equipment. I LOVE them!

  • Product Condition: Perfect
  • Bells of Steel Products Owned: Roller J cups for now.
  • My Fitness Goal Is: More muscle, less fat, less old man.
12/04/2020

Bells of Steel

Hey there Brian, Thanks for the awesome review. The Roller J-Cups do make it SO easy to center your bar! Let the good times roll, indeed! Thanks again, and happy lifting! Kat and the B.o.S. Crew

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